The Life Cycle of a Mesoscale Gravity Wave as Observed by a Network of Doppler Wind Profilers

Trexler, Christina M.; Koch, Steven E.

doi:10.1175/1520-0493(2000)128<2423:tlcoam>2.0.co;2

Cited by 25 publications

(13 citation statements)

References 38 publications

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“…More sophisticated techniques, such as the O'Brien correction method [used with wind profiler data by Trexler and Koch (2000)] and variational adjustment methods [used in dual-Doppler radar analysis by Koch et al (1993)], can be applied if needed. However, we are only integrating the GLOW data through a shallow ϳ2-km depth, and the variational method necessitates an arbitrary assumption about the upper level at which vertical motion is assumed to be nonexistent.…”

Section: B Vertical Circulation Analysis Methodologymentioning

confidence: 99%

An Atmospheric Soliton Observed with Doppler Radar, Differential Absorption Lidar, and a Molecular Doppler Lidar

Koch

Flamant

Wilson

et al. 2008

Journal of Atmospheric and Oceanic Technology

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Section: B Vertical Circulation Analysis Methodologymentioning

confidence: 99%

An Atmospheric Soliton Observed with Doppler Radar, Differential Absorption Lidar, and a Molecular Doppler Lidar

Koch

Flamant

Wilson

et al. 2008

Journal of Atmospheric and Oceanic Technology

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“…The correlation between wind perturbations and pressure perturbations in disturbances such as gravity waves (e.g., Coleman and Knupp 2009;Trexler and Koch 2000;Bosart and Sanders 1986) is consistent with this relationship. The classical impedance relation may be derived by linearizing the horizontal momentum equation at the surface (where w 5 0), and then integrating this equation over time in a propagating, form-preserving disturbance in pressure.…”

Section: Introductionmentioning

confidence: 59%

A Nonlinear Impedance Relation for the Surface Winds in Pressure Disturbances

Coleman

Knupp

2010

Journal of the Atmospheric Sciences

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The ''impedance relation'' between the wind perturbation within an ageostrophic atmospheric disturbance and its pressure perturbation and intrinsic propagation speed has been in use for decades. The correlation between wind and pressure perturbation was established through this relation. However, a simple Lagrangian model of an air parcel traversing an idealized sinusoidal wave in the pressure field indicates that the impedance relation produces significant errors. Examination of the nonlinearized horizontal momentum equation with a sinusoidal disturbance in pressure reveals an additional nonlinear term in the impedance relation, not previously included.In this paper, the impedance relation is rederived, with the solution being the original equation with the addition of the nonlinear term. The new equation is then evaluated against the Lagrangian model of an air parcel traversing an idealized gravity wave, as well as three observed cases. It is shown that the new impedance relation is indeed more accurate in predicting wind perturbations in disturbances based on pressure perturbations and intrinsic speed than the accepted equation. Implications for determination of the intrinsic phase speed of a disturbance when pressure and wind perturbations are known (another widely used application of the impedance relation) are also discussed.

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“…() in central Illinois. During the same experiment, an episode of MGWs that exerted a strong influence on the precipitation distribution in a large area was analysed by Trexler and Koch () and Jewitt et al . ().…”

Section: Introductionmentioning

confidence: 99%

Modulation of precipitation by a mesoscale gravity wave in northern Italy: Detection and analysis

Manfrin

Ferrarese

Campistron

et al. 2019

Quart J Royal Meteoro Soc

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A 6 h event of increased and gravity‐wave modulated stratiform rain with a period of approximately 1 h is described and two wave generation mechanisms (geostrophic adjustment and shear instability) are investigated. The predictions of a linear stability analysis of the flow (an unstable mode of about 100 km wavelength originating from the shear instability of the tropospheric jet and propagating in a duct encompassing almost the entire troposphere) are shown to agree very well with the measurements from a microbarometer network and wind‐profiler soundings.

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The Life Cycle of a Mesoscale Gravity Wave as Observed by a Network of Doppler Wind Profilers

Cited by 25 publications

References 38 publications

An Atmospheric Soliton Observed with Doppler Radar, Differential Absorption Lidar, and a Molecular Doppler Lidar

An Atmospheric Soliton Observed with Doppler Radar, Differential Absorption Lidar, and a Molecular Doppler Lidar

A Nonlinear Impedance Relation for the Surface Winds in Pressure Disturbances

Modulation of precipitation by a mesoscale gravity wave in northern Italy: Detection and analysis

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